What Exactly Volley Library Is:

Volley is an HTTP library that makes networking for Android apps easier and most importantly, faster.

If your response is a string, image, or JSON, you probably won't need to implement a custom Request.

Things You Need to Do:

Extend the Request<T> class, where <T> represents the type of parsed response the request expects. So if your parsed response is a string, for example, create your custom request by extending Request<String>.

Add Gson library compile dependency to your app level build.gradle

Create model class as per response.

Add custom request to request queue of volley.

Example:

This example uses the Gson library.

What Does Gson Do?

Gson is a library for converting Java objects to and from JSON using reflection.